The arrests are the latest in a series in connection with three linked police inquiries into alleged phone and e-mail hacking and illegal payments to police.
A 36-year-old man was arrested at his home address in Kent on suspicion of conspiracy to corrupt and suspicion of conspiracy to cause misconduct in a public office, police said, and is being questioned.
News International confirmed that he is a journalist for The Sun, a daily tabloid newspaper owned by News International, a British arm of the News Corp. empire.
A 42-year-old man and 38-year-old woman also were arrested at their home address in Lancashire in northern England.
The man, a former member of the armed forces, was arrested on suspicion of misconduct in a public office and the woman on suspicion of aiding and abetting misconduct in a public office, police said.
Both addresses are being searched.
London’s Metropolitan Police said the arrests were the result of information provided to the force by News Corp.’s Management Standards Committee, an internal panel set up by the media giant to probe suspected misconduct.
“It relates to suspected payments to a public official and is not about seeking journalists to reveal confidential sources in relation to information that has been obtained legitimately,” the police statement said of the information.
Thursday’s arrests come a day after the Crown Prosecution Service said London police had asked its prosecutors to file charges against at least eight people in connection with phone hacking by journalists.
The suspects include at least one journalist, a police officer and six other people, the Crown Prosecution Service said, declining to name them.
Dozens of people have been arrested in the phone hacking investigation, which has been running more than a year, but no one has been charged.
Rupert Murdoch’s News Corp. shut down its British Sunday tabloid, The News of the World, last summer after public outrage at the scale of illegal eavesdropping its journalists did in search of stories.
The defunct newspaper has been accused of hacking the voice mail of crime victims, politicians, celebrities and veterans.
Two parliamentary committees and an independent inquiry led by a judge are also probing the scandal.